1) Had Japan attacked Russian instead of America, Stalin would not have been in a position to bring General Zhukov and the Russian troops from the Far East - trained and equipped to fight during the winter months which halted the German advance with crucial victories at Moscow and Stalingrad!
6) Had the Americans and British postponed their liberation of Western Europe, instead of assuming that Russians would halt after taking Berlin, what would have prevented the Soviet military " juggernaut" from going all the way to the Atlantic - Stalin would have then defied his former Allies to force him to relinquish control!
Boy, what a mess. And also almost completely wrong.
1. The Soviets had nothing that the Japanese needed. They needed food, oil, and rubber. And that was all found south, in the Dutch East Indies and Philippines. So attacking the Soviets would have been stupid.
2. Meaningless.
3. They flew almost nothing to the Soviets. It almost all went via the Atlantic, because that is where the supplies were needed. Specifically trucks and rail locomotives. About all the cargo aircraft of the time could deliver was food (and we learned how little food an airlift could supply in 1948 with the Berlin Airlift), medical supplies, and passengers. Not enough "military equipment" to make much of a difference. But in routes with tons of good delivered, the Arctic Convoy was in the lead by far. Followed by the Persian Corridor, then at the end the Pacific Route. Primarily there in supplies that were used by their Far-East forces, so the Soviets would not have to supply them, and reserve their resources for fighting the Germans.
4. The partitions was largely decided at the Yalta Conference, which was before Germany surrendered, and was only considering Germany and not Japan at all. The Soviets were not a formal member of the meeting at Potsdam that decided on the Potsdam Declaration, as they were still Neutral with Japan. They had absolutely no chance of being involved in the occupation of that country.
5. Germany was not in "full retreat" on the Eastern Front. In 1944 alone they racked up over a million and a half dead, wounded, or missing Soviet soldiers and their allies. That is hardly "in full retreat", and in fact is proof of the bloody fighting going on. An enemy does not take those kinds of losses against an enemy in retreat. And the Soviets had to try to take out the German support in those countries. Especially the "Locally Raised SS" units that the Germans had raised in all of those nations that were fanatically anti-Soviet. In fact, in August 1944 the Germans started a new offensive on the Slovak-Polish border, A battle that lasted for over 2 months, and killed over 20,000 Soviets. Full retreat? Don't make me laugh.
6. This is confusing, conflicting, and utterly meaningless. Complete rubbish, I have no idea what you are even trying to say here.
Not bad, out of 6 points, 4 were completely wrong, and 2 were meaningless or nonsensical.
Side note now on the "Pacific Route". That was mostly the food, fuel, and supplies the Eastern Forces needed to survive in their garrisons. The only link between them and the main part of Moscow was the Trans-Siberian Railroad. And it was not used much during the war, as most of the resources that would normally be used to keep it operational and the supplies they would sent were being used to fight the Germans. So the US largely took over supplying them, so the Soviets did not have to worry about it.
And these were also limited, because of the conditions of the war. All supplies were only shipped on Soviet vessels from the US West Coast to Kamchatka. And because this was "Neutral Shipping", no war materials could be sent. Food, fuel, and logistical supplies only. No weapons or munitions (although some unarmed combat aircraft were sent that way then had weapons installed once they arrived by the Soviets).